1. High cost: The important thing is the high price of LiCoO2 as the positive electrode material. With the continuous development of positive electrode material technology, LiMn2O4, LiFePO4, etc. can be used as positive electrodes, which is expected to greatly reduce the cost of lithium-ion batteries.

　　2. Special protective circuits must be installed to prevent overcharging or discharging.

　　3. Poor compatibility with regular batteries, as lithium-ion batteries are generally required to be replaced with three regular batteries (3.6V).

　　4. The compacted density of the positive electrode of a lithium battery is small, usually around 0.8 to 1.3. Large volume.

　　5. Poor conductivity, slow diffusion speed of lithium ions, and low actual specific capacity during high magnification charging and discharging.

　　6. Lithium batteries have poor low-temperature performance.

　　7. The lifespan of a single lithium battery is long, around 2000 cycles, but the lifespan of a lithium battery pack is short, usually around 500 cycles.

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